I've found out that we got around 2 million session files, although I'm 
regularly running sessions2trash.py to clean up old sessions. We got many 
users and requests but the number of sessions is still way too much.

When a user (who is not logged in) makes a new request a new session file 
is created. On the next request the same session file is reused, this seems 
fine. Which expiration time does this session file get? can I set it 
somehow? maybe it's all those session files without expiration which are 
not deleted by sessions2trash.py ...

I've seen in the documentation that it is possible to store sessions in 
cookies. This seems like a good way to get rid of all those session files 
and improve performance. Since I don't store much data in the session the 
small cookie size limit is not a problem for me. I'd like to know how this 
internally works, is it secure? How does web2py know from this session in 
the cookie if the user is logged in? Isn't it possible to pretend being 
someone else and login into another account if there is no login 
information stored on the server?

thanks,
Alex

-- 
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- http://web2py.com/book (Documentation)
- http://github.com/web2py/web2py (Source code)
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